<?php
/**
 * @package php-font-lib
 * @link    https://github.com/PhenX/php-font-lib
 * @author  Fabien Ménager <fabien.menager@gmail.com>
 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
 */

namespace FontLib;

/**
 * Encoding map used to map a code point to a Unicode char.
 *
 * @package php-font-lib
 */
class EncodingMap
{
    private $f;

    function __construct($file)
    {
        $this->f = fopen($file, "r");
    }

    function parse()
    {
        $map = array();

        while ($line = fgets($this->f)) {
            if (preg_match('/^[\!\=]([0-9A-F]{2,})\s+U\+([0-9A-F]{2})([0-9A-F]{2})\s+([^\s]+)/', $line, $matches)) {
                $unicode = (hexdec($matches[2]) << 8) + hexdec($matches[3]);
                $map[hexdec($matches[1])] = array($unicode, $matches[4]);
            }
        }

        ksort($map);

        return $map;
    }
}